*HEADING
 STEADY STATE FREQUENCY RESPONSE OF TIRE: TIREDYNAMIC_SYMMETRIC
 3D HALF TIRE MODEL  
 STEP 0: TRANSFER TIRE INFLATION RESULTS FROM TIREDYNAMIC_AXI_HALF_ML
         AND GENERATE MODEL USING *SYMMETRIC MODEL GENERATION
 STEP 1: BRING TRANSFERRED AXISYMMETRIC RESULTS TO EQUILIBRIUM
 STEP 2: FOOTPRINT ANALYSIS (DISPLACEMENT CONTROL)
 STEP 3: FOOTPRINT ANALYSIS (LOAD CONTROL)
 UNITS: KG, M
*RESTART,WRITE,FREQ=100
*NODE,NSET=ROAD
 99999,   0.0,   0.0, -0.02
*SYMMETRIC MODEL GENERATION,REVOLVE,ELEMENT=200,NODE=200
 0.0, 0.0, 0.0,    0.0, 1.0, 0.0
 0.0, 0.0, 1.0
 360., 60
*SYMMETRIC RESULTS TRANSFER, STEP=1, INC=4
*ELSET,ELSET=FOOT,GEN
 5001, 6801, 200
 5002, 6802, 200
 5003, 6803, 200
 5004, 6804, 200
 5005, 6805, 200 
 5007, 6807, 200
*SURFACE,TYPE=CYLINDER,NAME=SROAD
 0., 0.,-0.31657,   1., 0.,-0.31657
 0., 1.,-0.31657
 START, -0.3, 0.
 LINE,   0.3, 0.
*RIGID BODY,REF NODE=99999,ANALYTICAL SURFACE=SROAD
*SURFACE,NAME=STREAD
 FOOT, S3
*CONTACT PAIR,INTERACTION=SRIGID
 STREAD, SROAD
*SURFACE INTERACTION,NAME=SRIGID
*FRICTION
 0.0
*ELSET,ELSET=SECT,GENERATE
 5800, 6200, 1
*NSET,NSET=SECT,GENERATE
 5800, 6400, 1
*NSET,NSET=FOOT,ELSET=FOOT
*NSET,NSET=SYM1
 51,54,55,6051,6054,6055
**
** NODE SETS ASYMA,ASYMB,ASYMC, and ASYMD
** USED FOR ANIT_SYMMETRY BC's
**
*NSET,NSET=ASYMA,GENERATE,UNSORTED
   255, 5855,  200
   254, 5854,  200
   251, 5851,  200
*NSET,NSET=ASYMB,GENERATE,UNSORTED
 11855, 6255, -200
 11854, 6254, -200
 11851, 6251, -200
*NSET,NSET=ASYMC,GENERATE,UNSORTED
   255, 5055,  200
   254, 5854,  200
   251, 5851,  200
*NSET,NSET=ASYMD,GENERATE,UNSORTED
 11855, 7055, -200
 11854, 6254, -200
 11851, 6251, -200
*EQUATION
 2
 ASYMA, 1, 1.0, ASYMB, 1,  1.0
*EQUATION
 2
 ASYMA, 2, 1.0, ASYMB, 2,  1.0
*EQUATION
 2
 ASYMC, 3, 1.0, ASYMD, 3, -1.0
*FILE FORMAT,ZERO INCREMENT
**************************************************
*STEP,NLGEOM=YES
 1:  BRING TRANSFERRED RESULTS TO EQUILIBRIUM
*STATIC
 1.0, 1.0
*BOUNDARY,OP=NEW
 RIM,  1, 3
 SYM1, 1,2
*DSLOAD,OP=NEW
 INSIDE, P, 200.E3
*NODE PRINT,NSET=ROAD,FREQ=1
 U,
 RF,
*EL PRINT,FREQ=0
*NODE FILE,NSET=ROAD,FREQ=1
 U,RF
*EL FILE,FREQ=0
*OUTPUT,FIELD,FREQ=0
*OUTPUT,HISTORY,FREQ=1
*NODE OUTPUT, NSET=ROAD
 U,RF
*END STEP
**************************************************
*STEP,NLGEOM=YES
 2:  FOOTPRINT (Displacement controlled)
*STATIC
 0.2, 1.0
*BOUNDARY,OP=NEW
 RIM,  1, 3
 ROAD, 1, 2
 ROAD, 4, 6
 SYM1, 1,2
 ROAD, 3, , 0.02
*END STEP
**************************************************
*STEP,NLGEOM=YES
 3:  FOOTPRINT (Load controlled)
*STATIC
 1.0, 1.0
*BOUNDARY,OP=NEW
 RIM,  1, 3
 ROAD, 1, 2
 ROAD, 4, 6
 SYM1, 1,2
*CLOAD, OP=NEW
 ROAD, 3, 1650.
*OUTPUT,FIELD,FREQ=999
*NODE OUTPUT
 U,
*END STEP